in zerodha pi there is 120 dayss of intraday data available is zerodha have more data that 120 days in there archive or it is possible to get upto 1 year of intraday data from Zerodha in excel format
currently pi has up to 120 days of minute data you can open the chart of required time frame and export the chart data into excel from chart menu drop down.
you can contact data vendors to get more minute data.
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Any data vendor do you know